import random


class Settings:
    """存储游戏《外星人入侵》中的所有设置的类"""

    def __init__(self):
        """ 初始化游戏设置 """

        """静态设置"""

        # 屏幕设置
        self.screen_width = 1200
        self.screen_hight = 700
        self.bg_color = (230, 230, 230)
        self.ship_speed = 1.5
        self.ship_limit = 3

        #  子弹相关设置
        self.bullet_speed = 2.5
        self.bullet_width = 1100
        self.bullet_hight = 15
        self.bullet_color = (60, 60, 60)
        self.bullets_allowed = 6

        # 外星人设置
        self.alien_speed = 2.5

        # 底部速度
        self.fleet_drop_speed = 10
        # fleet_direction 为1 表示向右移动，为-1表示右左移动
        self.fleet_direction = 1

        """以什么速度加快游戏的节奏"""
        self.speedup_scale = 1.1
        self.initialize_dynamic_settings()

    def initialize_dynamic_settings(self):
        """初始化随着游戏的变化而加强难度"""
        self.ship_speed = 1.5
        self.bullet_speed = 2.5
        self.alien_speed = 1.0

        # fleet_direction 为1 表示向右移动，为-1表示右左移动
        self.fleet_direction = 1


    def increase_speed(self):
        """提高速度"""
        self.ship_speed *= self.speedup_scale
        self.bullet_speed *= self.speedup_scale
        self.alien_speed *= self.speedup_scale